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File extension filetypes
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Website  EXT   Filetype description                                    
    FILExt  ---  Microsoft Backup File Set (Microsoft Corporation
    File Extensions  ---  Microsoft backup file set 
    FILExt  $ED  C Editor Temporary File (Microsoft Corporation
    FILExt  $ED  C/C++ Temporary Editor File (Microsoft Corporation
    File Extensions  $ED  Microsoft C++ editor temporary file 
    FILExt  $VM  Windows 3.x Virtual Manager Temp File (Microsoft Corporation
    TrID  ??_  Microsoft KWAJ compressed (Phil Katz's 'deflate') 
 Header Hexdump:  4B 57 41 4A 88 F0 27 D1 03 00 
    FILExt  @@@  Codeview for C (Microsoft Corporation
    File Extensions  @@@  Screen files used in the installation and instruction by e.g. Microsoft Codeview for C 
    File Extensions  _SLN  Microsoft Visual Studio Launcher file 
    FILExt  _SLN  Visual Studio Solution (Microsoft Corporation
    File Extensions  _SLN100  Microsoft Visual Studio Launcher file 
    File Extensions  _SLN60  Microsoft Visual Basic Launcher file 
    FILExt  _SLN60  Visual Studio 6.0 Solution (Microsoft Corporation
    File Extensions  _SLN70  Microsoft Visual Studio Launcher file 
    FILExt  _SLN70  Visual Studio .NET 2002 Solution (Microsoft Corporation
    File Extensions  _SLN71  Microsoft Visual Studio file 
    FILExt  _SLN71  Visual Studio .NET 2003 Solution (Microsoft Corporation
    File Extensions  _SLN80  Microsoft Visual Studio Launcher file 
    FILExt  _SLN80  Visual Studio 2005 Solution (Microsoft Corporation
    File Extensions  _SLN90  Microsoft Visual Studio Launcher file 
    FILExt  _SLN90  Visual Studio 2008 Solution (Microsoft Corporation
    File Extensions  _VBXSLN100  Microsoft Visual Studio Launcher file 
    File Extensions  _VBXSLN80  Microsoft Visual Studio Launcher file 
    FILExt  _VBXSLN80  Visual Basic Express 2005 Solution (Microsoft Corporation
    File Extensions  _VBXSLN90  Microsoft Visual Studio Launcher file 
    FILExt  _VBXSLN90  Visual Basic Express 2008 Solution (Microsoft Corporation
    File Extensions  _VCPPXSLN100  Microsoft Visual Studio Launcher file 
    File Extensions  _VCPPXSLN80  Microsoft Visual Studio Launcher file 
    FILExt  _VCPPXSLN80  Visual C++ Express 2005 Solution (Microsoft Corporation
    File Extensions  _VCPPXSLN90  Microsoft Visual Studio Launcher file 
    FILExt  _VCPPXSLN90  Visual C++ Express 2008 Solution (Microsoft Corporation
    File Extensions  _VCSXSLN100  Microsoft Visual Studio Launcher file 
    File Extensions  _VCSXSLN80  Microsoft Visual Studio Launcher file 
    FILExt  _VCSXSLN80  Visual C# Express 2005 Solution (Microsoft Corporation
    File Extensions  _VCSXSLN90  Microsoft Visual Studio Launcher file 
    FILExt  _VCSXSLN90  Visual C# Express 2008 Solution (Microsoft Corporation
    File Extensions  _VJSXSLN80  Microsoft Visual Studio Launcher file 
    FILExt  _VJSXSLN80  Visual J# Express 2005 Solution (Microsoft Corporation
    File Extensions  _VWDXSLN100  Microsoft Visual Studio Launcher file 
    File Extensions  _VWDXSLN80  Microsoft Visual Studio Launcher file 
    FILExt  _VWDXSLN80  Visual Web Developer Express 2005 Solution (Microsoft Corporation
    File Extensions  _VWDXSLN90  Microsoft Visual Studio Launcher file 
    FILExt  _VWDXSLN90  Visual Web Developer Express 2008 Solution (Microsoft Corporation
    FILExt  ~_~  Temporary File (Microsoft Corporation
    File Extensions  ~~C  Microsoft Windows applog file 
    File Extensions  ~~D  Microsoft Windows applog file 
    FILExt  0  Flight Simulator Texture File (Microsoft Corporation
    File Extensions  0  Microsoft Flight Simulator texture file 
    FILExt  000  Doublespace Compressed Data File (Microsoft Corporation
    FILExt  001  Drivespace Virtual Drive (Microsoft Corporation
    File Extensions  001  Microsoft Drivespace cirtual drive 
    FILExt  01$  (01$...Any Number$) Compressed Archive (Microsoft Corporation
    File Extensions  12A  Microsoft Windows file 
    File Extensions  1PA  Microsoft Windows file 
    FILExt  2  Setup Factory 6.0 Setup Launcher (Microsoft Corporation
    DotWhat  232  Microsoft Office Install/tbv 
    File Extensions  232  Microsoft Office Install/tbv 
    FILExt  232  Office Install (Microsoft Corporation
    File Extensions  286  Microsoft Windows virtual device driver 
    File Extensions  386  Microsoft Windows virtual device driver 
    FILExt  386  Windows Enhanced Mode Driver or Swap File (Microsoft Corporation
    FILExt  3CN  3D Movie Maker Scene (Microsoft Corporation
    FILExt  3MM  3D Movie Maker Movie (Microsoft Corporation
    File Extensions  3MM  Microsoft 3D Movie Maker video file 
    FILExt  3TH  3D Movie Maker Thumbnail Data File (Microsoft Corporation
    File Extensions  3TH  3D Movie Maker Thumbnail Data File (Microsoft
    FILExt  5D  Works File (Microsoft Corporation
    File Extensions  8  Assembly language source code file (A86) similar to Microsoft Assembler 
    File Extensions  AAF  Microsoft Agent data file 
    FILExt  ACA  Agent Character (Microsoft Corporation
    DotWhat  ACA  Microsoft Agent Character Animation File 
    File Extensions  ACA  Microsoft Agent character 
    FILExt  ACC  Composer File (Microsoft Corporation
    Wikipedia  ACCDA  Data - Microsoft Access Database Wizard (Open XML) 
    File Extensions  ACCDA  Microsoft Access file 
    FILExt  ACCDB  Access 2007 Database File (Microsoft Corporation
    Wikipedia  ACCDB  Data - Microsoft Access Database (Open XML) 
    Cryer  ACCDB  Microsoft Access 2007 database file 
    TrID  ACCDB  Microsoft Access 2007 Database 
 Header Hexdump:  00 01 00 00 53 74 61 6E 64 61 72 64 20 41 43 45  
    File Extensions  ACCDC  Microsoft Access file 
    Wikipedia  ACCDE  Data - Microsoft Access Database Wizard (Open XML) 
    DotWhat  ACCDR  Microsoft Access 2007 Database (Runtime Mode
    Wikipedia  ACCDT  Data - Microsoft Access Database Template (Open XML) 
    DotWhat  ACCDT  Microsoft Access 2007 Database Template 
    Wikipedia  ACCDU  Data - Microsoft Access Database Wizard (Open XML) 
    File Extensions  ACCDU  Microsoft Access file 
    File Extensions  ACCESSOR  Microsoft Visual Studio accessor file 
    FILExt  ACD  Agent Character Definition (Microsoft Corporation
    FILExt  ACE  Train Simulator Texture File (Microsoft Corporation
    FILExt  ACF  Agent Character (Microsoft Corporation
    TrID  ACF  Microsoft Agent Character 
 Header Hexdump:  C4 AB CD AB 
    File Extensions  ACF  Microsoft Agent HTTP character file 
    FILExt  ACG  Agent Preview (Microsoft Corporation
    DotWhat  ACG  Microsoft Agent Preview File 
    File Extensions  ACG  Microsoft Agent preview file 
    FILExt  ACL  Access Control List (Microsoft Corporation
    Wikipedia  ACL  AutoCorrect List - Microsoft Office 
    DotWhat  ACL  Automatic Correction List for Microsoft Office 7.0 
    FILExt  ACL  Office AutoCorrect List (Microsoft Corporation
    FILExt  ACM  Audio Compression Manager Driver (Microsoft Corporation
    DotWhat  ACP  Microsoft Office Assistant Preview file 
    File Extensions  ACP  Microsoft Office Assistant preview file 
    FILExt  ACP  Office Assistant Preview File (Microsoft Corporation
    FILExt  ACS  Agent Character (Microsoft Corporation
    DotWhat  ACS  Microsoft Agent Character File 
    File Extensions  ACS  Microsoft Agent character structered storage file 
    TrID  ACS  Microsoft Agent Character 
 Header Hexdump:  C3 AB CD AB 
    FILExt  ACT  FoxPro Documenting Wizard Action Diagram (Microsoft Corporation
    File Extensions  ACT  Microsoft Office Actor file 
    FILExt  ACT  Office Actor Program File (Microsoft Corporation
    FILExt  ACT  Train Simulator Activity File (Microsoft Corporation
    File Extensions  ACTIVITYDIAGRAM  Microsoft Visual Studio activity diagram file 
    FILExt  ACTPROJ  Visual Studio .NET ACT Project (Microsoft Corporation
    File Extensions  ACV  Microsoft DirectX audio code C file 
    FILExt  ACW  Accessibility Wizard Settings (Microsoft Corporation
    DotWhat  ACW  Microsoft Accessibility Wizard Settings 
    File Extensions  ACW  Microsoft accessibility wizard 
    FILExt  ADC  Systems Management Server (SMS) Collection Evaluator Addition (Microsoft Corporation
    File Extensions  ADD  Microsoft Dynamics AX developer documentation file 
    File Extensions  ADDIN  Microsoft Visual Studio addin file 
    FILExt  ADE  Access Project Extension (Microsoft Corporation
    File Extensions  ADE  Microsoft Access project extension file 
    DotWhat  ADE  Microsoft Access Project Extension 
    Cryer  ADE  Microsoft Access project extension 
    FILExt  ADM  Windows Policy Template (Microsoft Corporation
    FILExt  ADML  Windows/Office Language Specific Group Policy Settings (Microsoft Corporation
    FILExt  ADMX  Windows/Office Group Policy Settings (Microsoft Corporation
    FILExt  ADN  Access Blank Project Template (Microsoft Corporation
    File Extensions  ADN  Microsoft Access blank project template 
    FILExt  ADP  Access Project (Microsoft Corporation
    File Extensions  ADP  Microsoft Access project file 
    Cryer  ADP  Microsoft Access project file 
    DotWhat  ADP  Microsoft Access Project 
    TrID  ADP  Microsoft Access Project 
 Header Hexdump:  D0 CF 11 E0 A1 B1 1A E1 00 
    FILExt  AEU  AutoRoute Express Europe Route (Microsoft Corporation
    File Extensions  AEU  Microsoft AutoRoute Express Europe route 
    FILExt  AG4  Access G4 File (Microsoft Corporation
    FILExt  AGE3SCN  Age of Empires 3 Scenario (Microsoft Corporation
    FILExt  AI  Rise of Nations AI File (Microsoft Corporation
    FILExt  AIR  Flight Simulator Aircraft Performance Info File (Microsoft Corporation
    FILExt  AKM  Microsoft Operation Manager (MOM) Management Pack (Binary) (Microsoft Corporation
    FILExt  ALX  ActiveX Layout File (Microsoft Corporation
    File Extensions  AML  Microsoft Assistance Markup Language 
    FILExt  ANI  Windows Animated Cursor (Microsoft Corporation
    File Extensions  ANN  Microsoft Windows Help annotation 
    File Extensions  ANS  Microsoft Office Word text and layout 
    FILExt  ANS  Word Text and Layout (Microsoft Corporation
    File Extensions  APK  Microsoft Train Simulator packaged activity 
    FILExt  APK  Train Simulator Packaged Activity (Microsoft Corporation
    File Extensions  APM  Microsoft Windows Metafile image format (Aldus Placeable metafile
    FILExt  APPLICATION  ClickOnce Deployment Manifest (Microsoft Corporation
    FILExt  APPREF-MS  Application Reference File (Microsoft Corporation
    DotWhat  APPREF-MS  Microsoft Application Reference File 
    FileInfo  APPREF-MS  Microsoft Application Reference File 
    File Extensions  APS  Microsoft Visual C++ binary version of resource 
    FILExt  APS  Visual C++ File (Microsoft Corporation
    FILExt  AR  Midtown Madness City Add-on (Microsoft Corporation
    FILExt  ARC  Schedule+ 1.0 File (Microsoft Corporation
    FILExt  ARMX  ASP.NET Source File (Microsoft Corporation
    FILExt  ARMY  Impossible Creatures Collection of Created Creatures (Microsoft Corporation
    FILExt  ARV  AutoRoute User Information (Microsoft Corporation
    File Extensions  ARV  Microsoft AutoRoute user information 
    DotWhat  ASA  Microsoft Visual InterDev File 
    File Extensions  ASA  Microsoft Visual InterDev file 
    FILExt  ASA  Visual InterDev File (Microsoft Corporation
    FILExt  ASAX  ASP.NET Source File (Microsoft Corporation
    FILExt  ASCX  Web User Control (Microsoft Corporation
    FILExt  ASD  Advanced Streaming Format Description (Microsoft Corporation
    Wikipedia  ASD  Autosave file - Microsoft Word 
    DotWhat  ASD  Microsoft Advanced Streaming Format 
    File Extensions  ASD  Microsoft Word auto-save temporary document 
    DotWhat  ASD  Microsoft Word AutoSave File 
    FILExt  ASD  Word Automatic Backup (Microsoft Corporation
    Wikipedia  ASF  Advanced Streaming Format (Compressed Windows audio/video) - Microsoft Corporation 
    FILExt  ASF  Advanced Streaming Format (Microsoft Corporation
    FILExt  ASHX  ASP.NET Web Handler File (Microsoft Corporation
    Wikipedia  ASMX  ASP.NET Web Service - Microsoft Corporation 
    Wikipedia  ASP  Active Server Pages of Microsoft.Net - Microsoft Corporation 
    FILExt  ASPHTML  ASP HTML (Microsoft Corporation
    DotWhat  ASPHTML  Microsoft .ASP HTML File 
    File Extensions  ASPHTML  Microsoft .asp html file 
    Wikipedia  ASPX  ActiveX Server Pages of Microsoft.Net - Microsoft Corporation 
    FILExt  ASPX  ASP.NET Source File (Microsoft Corporation
    File Extensions  ASR  Microsoft Streets & Trips route 
    FILExt  ASR  Streets & Trips Route (Microsoft Corporation
    DotWhat  ASSP  Microsoft Office HTML 
    DotWhat  ASST  Microsoft Assistant 
    FILExt  ASV  Train Simulator Computed Activity File (Microsoft Corporation
    FILExt  ASX  Advanced Stream Redirector File (Microsoft Corporation
    Wikipedia  ASX  Advanced Stream Redirector file, redirects to an ASF file (see ASF) - Microsoft Corporation 
    File Extensions  ASX  Microsoft Advanced Streaming Redirector file 
    FileInfo  ASX  Microsoft ASF Redirector File 
    FILExt  ATP  Visual Studio .NET ACT Project (Microsoft Corporation
    FILExt  AVB  Chat Character File (Microsoft Corporation
    TrID  AVB  Microsoft Chat Character 
 Header Hexdump:  81 
    FILExt  AW  Answer Wizard (Microsoft Corporation
    TrID  AW  Microsoft Answer Wizard 
 Header Hexdump:  8A 01 09 00 00 00 E1 08 00 00 99 19 
    FILExt  AWD  FaxView Document (Microsoft Corporation
    TrID  AWD  Microsoft At Work Fax document 
 Header Hexdump:  D0 CF 11 E0 A1 B1 1A E1 00 
    Wikipedia  AWD  Microsoft Fax At Work Document - Microsoft Fax At Work 
    DotWhat  AWDB  Microsoft Works Database File 
    File Extensions  AWP  Microsoft Fax key viewer 
    File Extensions  AWS  Microsoft Fax document 
    DotWhat  AWSS  Microsoft Works Spreadsheet File 
    DotWhat  AWWP  Microsoft Works Word Processor file 
    FILExt  AWX  DirectX 8.1 (Microsoft Corporation
    FILExt  AX  DirectShow Filter (Microsoft Corporation
    FILExt  AXD  ASP.NET Web Handler File (Microsoft Corporation
    FILExt  AXE  AutoRoute Export File (Microsoft Corporation
    File Extensions  AXE  Microsoft Autoroute map file 
    FILExt  AXG  AutoRoute Trip File (Microsoft Corporation
    FILExt  B!K  Flight Simulator Scenery File (Microsoft Corporation
    DotWhat  BAD  Microsoft Exchange Badmail File 
    DotWhat  BART  Microsoft Border Art File 
    File Extensions  BAS  Microsoft QuickBASIC (QBasic) extended source 
    TrID  BAS  Microsoft QuickBASIC 4.5 source module 
 Header Hexdump:  FC 00 01 00 0C 00 81 01 82 01 06 00 01 02 03 04  
    FILExt  BAT  Batch Processing (Microsoft Corporation
    DotWhat  BCM  Microsoft Works Communications file 
    FileInfo  BCM  Microsoft Works Communications Script Backup 
    FILExt  BCM  Works Communications File (Microsoft Corporation
    File Extensions  BCS  Microsoft Windows 95 browse information file 
    DotWhat  BDB  Microsoft Works Database Backup File 
    FileInfo  BDB  Microsoft Works Database Backup File 
    FILExt  BDB  Works Database File (Microsoft Corporation
    File Extensions  BDCM  Microsoft Visual Studio BDC model file 
    File Extensions  BDCR  Microsoft Visual Studio BDC resource file 
    DotWhat  BDP  Microsoft Exchange Diagnostic Message 
    File Extensions  BDP  Microsoft Exchange diagnostic message 
    Wikipedia  BDR  Border - Microsoft Publisher 
    TrID  BDR  Microsoft Border art 
 Header Hexdump:  58 54 01 00 
    DotWhat  BDR  Microsoft Exchange - Non-Delivery Report File 
    Cryer  BDR  Microsoft Publisher Border file 
    DotWhat  BDR  Microsoft Publisher Border 
    FILExt  BDR  Publisher Border (Microsoft Corporation
    FILExt  BG  Backgammon for Windows Game File (Microsoft Corporation
    DotWhat  BG  Microsoft Backgammon Game file 
    FILExt  BGB  Chat Background Graphic (Microsoft Corporation
    FILExt  BGL  Flight Simulator Scenery File (Microsoft Corporation
    File Extensions  BGL  Microsoft Flight Simulator scenery data file 
    DotWhat  BGL  Microsoft Flight Simulator Scenery file 
    FILExt  BH3  Rise of Nations Unit Graphic (Microsoft Corporation
    FILExt  BHA  Rise of Nations Unit Graphic (Microsoft Corporation
    FILExt  BHS  Rise of Nations Script (Microsoft Corporation
    File Extensions  BI  Microsoft Visual Basic for DOS include file 
    FILExt  BI  Quick Basic or Visual Basic for DOS Include File (Microsoft Corporation
    File Extensions  BIFF  Microsoft Excel file 
    File Extensions  BKF  Microsoft backup file 
    FILExt  BKF  WindowsXP Backup Utility Backup Set (Microsoft Corporation
    DotWhat  BKMK  Microsoft Bookmark File 
    File Extensions  BKS  Microsoft Windows 2000 scheduled backup script 
    DotWhat  BKS  Microsoft Works Spreadsheet Backup File 
    FileInfo  BKS  Microsoft Works Spreadsheet Backup File 
    File Extensions  BKS  Microsoft Works spreadsheet document backup file 
    FILExt  BKS  Windows 2000 Scheduled Backup Script (Microsoft Corporation
    FILExt  BKS  Works Spreadsheet Backup (Microsoft Corporation
    FILExt  BLD  Developer Studio MAK (Microsoft Corporation
    File Extensions  BLD  Microsoft Developer Studio MAK file 
    File Extensions  BLF  Microsoft Windows Vista file 
    File Extensions  BLG  Microsoft Windows binary performance log 
    FILExt  BLN  Rise of Nations Campaign Media File (Microsoft Corporation
    File Extensions  BMC  Microsoft Terminal Server Client cache file 
    FILExt  BND  Flight Simulator Panels File (Microsoft Corporation
    File Extensions  BND  Microsoft Flight Simulator panels file 
    FILExt  BOE  Outlook Express Backup File (Microsoft Corporation
    FILExt  BOL  Booasm Compressed Archive Library (Microsoft Corporation
    FILExt  BOO  Microsoft Booasm.arc Compressed Archive File 
    File Extensions  BOO  Microsoft Booasm.arc encoded file archive 
    File Extensions  BOOTSKIN  Microsoft Windows boot skin 
    FILExt  BOX  Systems Management Server (SMS) Temporary Holding Area (Microsoft Corporation
    File Extensions  BPS  Microsoft Works document backup file 
    DotWhat  BPS  Microsoft Works Document 
    FILExt  BPS  Works Document (Microsoft Corporation
    FILExt  BS_  Bookshelf Find Menu Shell Extension (Microsoft Corporation
    FILExt  BSC  Developer Studio Browser File (Microsoft Corporation
    Wikipedia  BSC  Pwbrmake object file - Microsoft Fortran 
    FILExt  BSW  Office Business Scorecard Manager Workspace File (Microsoft Corporation
    FILExt  BTR  FrontPage Binary-Tree Index (Microsoft Corporation
    File Extensions  BTR  Microsoft FrontPage related file 
    DotWhat  C#  Microsoft C# File 
    File Extensions  C#  Microsoft Visual C# file 
    File Extensions  C2R  Microsoft Windows Media Center click-to-record file 
    FILExt  CAB  Cabinet File (Microsoft Corporation
    TrID  CAB  Microsoft Cabinet Archive 
 Header Hexdump:  4D 53 43 46 00 00 00 00 
    File Extensions  CAB  Microsoft Flight Simulator 2004 game archive 
    FILExt  CAC  Infoview (Microsoft Corporation
    File Extensions  CAC  Microsoft Infoview 
    FILExt  CAG  Clip Gallery Catalog File (Microsoft Corporation
    File Extensions  CAG  Microsoft Clip Gallery catalog file 
    File Extensions  CAL  Microsoft Schedule data 
    FILExt  CAL  Schedule Data (Microsoft Corporation
    FILExt  CAMP  Windows Color System Color Appearance Model Profile (CAMP) (Microsoft Corporation
    TrID  CAP  Microsoft NetMon v1.x traffic capture 
 Header Hexdump:  52 54 53 53 
    TrID  CAP  Microsoft NetMon v2.x traffic capture 
 Header Hexdump:  47 4D 42 55 
    FILExt  CAP  NetMon Capture File (Microsoft Corporation
    Wikipedia  CAT  Device driver digital signature - Microsoft Windows 
    File Extensions  CAT  Microsoft Security Catalog file 
    TrID  CAT  Microsoft Security Catalog 
 Header Hexdump:  30 
    FILExt  CAT  Security Catalog (Microsoft Corporation
    FILExt  CB  Clean Boot File (Microsoft Corporation

Found 2621 item(s). Click on the websites' links above for the details!
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